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    SubjectRe: [PATCH v4 00/45] x86: Kernel IBT
    On Tue, Mar 08, 2022 at 04:30:11PM +0100, Peter Zijlstra wrote:
    > Hopefully last posting...
    >
    > Since last time:
    >
    > - updated the ftrace_location() patch (naveen, rostedt)
    > - added a few comments and clarifications (bpetkov)
    > - disable jump-tables (joao)
    > - verified clang-14-rc2 works
    > - fixed a whole bunch of objtool unreachable insn issue
    > - picked up a few more tags
    >
    > Patches go on top of tip/master + arm64/for-next/linkage. Also available here:
    >
    > git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git x86/wip.ibt

    <applause> Nice work!!! kernel shadow stacks next? ;-)

    Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>

    As talked about on IRC there are still a few outstanding issues, that
    I'm fine with fixing after the merge window during the upcoming -next
    cycle:

    - xen hypercall page functions need 'ret' - (I think you already fixed)

    - why don't unreachables need to fill up the entire sym hole?

    - get rid of the 'c_file' hack

    - improve cmdline option intuitive-ness

    - properly integrate the retpoline "demotion" with the new Spectre BHI
    related patches - probably still needs more discussion - for example
    we might instead want to disable IBT and warn

    --
    Josh

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